:root {
  color-scheme: light dark;
  --background: #f4f5f7;
  --card-bg: #ffffff;
  --card-border: rgba(0, 0, 0, 0.08);
  --text-primary: #1f2933;
  --text-secondary: #52606d;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --success: #059669;
  --error: #dc2626;
  --table-header: #e5e7eb;
  --shadow: rgba(15, 23, 42, 0.08);
  --calendar-grid-bg: rgba(37, 99, 235, 0.06);
  --calendar-grid-border: rgba(37, 99, 235, 0.12);
  --calendar-day-hover: rgba(37, 99, 235, 0.12);
  --calendar-day-range: rgba(37, 99, 235, 0.1);
  --calendar-day-selected: rgba(37, 99, 235, 0.18);
  --calendar-day-shadow: rgba(37, 99, 235, 0.18);
  --calendar-today-ring: #f59e0b;
  --calendar-selection-bg: rgba(15, 23, 42, 0.05);
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #0f172a;
    --card-bg: #111827;
    --card-border: rgba(255, 255, 255, 0.08);
    --text-primary: #f8fafc;
    --text-secondary: #cbd5f5;
    --accent: #60a5fa;
    --accent-hover: #3b82f6;
    --table-header: rgba(255, 255, 255, 0.05);
    --shadow: rgba(0, 0, 0, 0.4);
    --calendar-grid-bg: rgba(96, 165, 250, 0.1);
    --calendar-grid-border: rgba(96, 165, 250, 0.2);
    --calendar-day-hover: rgba(96, 165, 250, 0.24);
    --calendar-day-range: rgba(96, 165, 250, 0.18);
    --calendar-day-selected: rgba(96, 165, 250, 0.3);
    --calendar-day-shadow: rgba(96, 165, 250, 0.25);
    --calendar-today-ring: #fbbf24;
    --calendar-selection-bg: rgba(148, 163, 184, 0.12);
  }

  .calendar-quick-buttons .filter-quick-btn {
    background: rgba(96, 165, 250, 0.18);
    border-color: rgba(96, 165, 250, 0.35);
    color: var(--accent);
  }

  .calendar-quick-buttons .filter-quick-btn:hover,
  .calendar-quick-buttons .filter-quick-btn:focus-visible {
    background: rgba(96, 165, 250, 0.3);
    border-color: rgba(96, 165, 250, 0.5);
  }

  .calendar-grid {
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--background);
  color: var(--text-primary);
  line-height: 1.5;
}

/* Sidebar */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 240px;
  height: 100vh;
  background: var(--card-bg);
  border-right: 1px solid var(--card-border);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 2rem 1rem;
  box-shadow: 4px 0 12px var(--shadow);
  z-index: 100;
}

.sidebar-logo {
  text-align: center;
  font-weight: 700;
  color: var(--accent);
  font-size: 1.3rem;
  margin-bottom: 2rem;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.6rem 0.9rem;
  border-radius: 0.6rem;
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  transition: background 0.15s ease, color 0.15s ease;
}

.nav-link:hover {
  background: rgba(37, 99, 235, 0.1);
  color: var(--accent);
}

.nav-link.active {
  background: var(--accent);
  color: #fff;
}

/* Hauptinhalt */
.main-content {
  margin-left: 240px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.timetracking-wrapper {
  max-width: 520px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* Hero / Header */
.hero {
  text-align: center;
  margin-bottom: 0;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 2.8rem);
}

.hero p {
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto;
}

/* Sprachumschalter */
#lang-toggle {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s ease;
}

#lang-toggle:hover {
  background: var(--accent-hover);
}

/* Karten */
.card-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 1rem;
  padding: 1.75rem;
  box-shadow: 0 8px 22px var(--shadow);
  transition: transform 0.15s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px var(--shadow);
}

.card h2 {
  margin-top: 0;
  margin-bottom: 1.25rem;
  font-size: 1.4rem;
  color: var(--accent);
}

.helper-text {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.hidden {
  display: none;
}

/* Buttons */
button {
  font: inherit;
  padding: 0.65rem 1.5rem;
  border-radius: 999px;
  border: none;
  background: var(--accent);
  color: white;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
}

button:hover,
button:focus-visible {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--card-border);
}

.secondary:hover,
.secondary:focus-visible {
  background: rgba(37, 99, 235, 0.12);
}

/* Forms */
form {
  display: grid;
  gap: 0.75rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-field.hidden {
  display: none;
}

label {
  font-weight: 600;
  font-size: 0.95rem;
}

input,
select {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border-radius: 0.65rem;
  border: 1px solid var(--card-border);
  background: transparent;
  color: inherit;
  font: inherit;
}

input:focus,
select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Tables */
.table-card {
  margin-bottom: 3rem;
}

.table-card .table-scroll {
  max-height: clamp(320px, 50vh, 560px);
  overflow-y: auto;
  overflow-x: auto;
  border-radius: 0.85rem;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.02);
}

.table-card .table-scroll table {
  width: 100%;
  min-width: 640px;
}

.table-card .table-scroll::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.table-card .table-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.table-card .table-scroll::-webkit-scrollbar-thumb {
  background: rgba(15, 23, 42, 0.15);
  border-radius: 999px;
}

.balance-card .balance-indicator {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.25rem;
}

.balance-card .balance-label {
  font-weight: 600;
}

.balance-card .balance-thresholds {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.calendar-card {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.calendar-toolbar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-radius: 0.9rem;
  border: 1px solid var(--card-border);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(37, 99, 235, 0));
  box-shadow: 0 12px 30px var(--shadow);
}

.calendar-toolbar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.calendar-toolbar-row--top {
  align-items: flex-start;
}

.calendar-heading {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 220px;
}

.calendar-subtitle {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 36rem;
}

.calendar-controls {
  display: grid;
  grid-template-columns: auto minmax(9rem, 1fr) auto;
  align-items: center;
  gap: 0.65rem;
}

.calendar-quick-buttons {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
  flex: 1 1 auto;
}

.calendar-toolbar h2 {
  margin: 0;
  font-size: 1.4rem;
}

.calendar-nav {
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  border-radius: 0.65rem;
  width: 2.5rem;
  height: 2.5rem;
  font-size: 1.2rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s ease;
}

.calendar-nav:hover,
.calendar-nav:focus-visible {
  background: rgba(15, 23, 42, 0.06);
}

.calendar-month-input {
  border: 1px solid var(--card-border);
  border-radius: 0.65rem;
  padding: 0.35rem 0.65rem;
  font-size: 0.95rem;
  background: var(--card-bg);
  min-width: 10rem;
  text-align: center;
}

.calendar-clear {
  white-space: nowrap;
}

.calendar-quick-buttons .filter-quick-btn {
  border-color: rgba(37, 99, 235, 0.3);
  color: var(--accent);
  background: rgba(37, 99, 235, 0.08);
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.calendar-quick-buttons .filter-quick-btn:hover,
.calendar-quick-buttons .filter-quick-btn:focus-visible {
  background: rgba(37, 99, 235, 0.14);
  border-color: rgba(37, 99, 235, 0.5);
  color: var(--accent-hover);
}

.calendar-quick-buttons .filter-quick-btn:active {
  transform: translateY(0);
}

.calendar-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.filter-heading {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

.filter-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  align-items: end;
}

.filter-field,
.filter-search {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.filter-label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.filter-field select,
.filter-field input,
.filter-search input {
  border: 1px solid var(--card-border);
  border-radius: 0.65rem;
  padding: 0.55rem 0.75rem;
  background: var(--card-bg);
  color: inherit;
  font: inherit;
}

.filter-field select:focus,
.filter-field input:focus,
.filter-search input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.filter-checkbox {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--card-border);
  border-radius: 0.65rem;
  background: var(--card-bg);
  color: var(--text-primary);
  font-size: 0.9rem;
  cursor: pointer;
}

.filter-checkbox input {
  width: 1.1rem;
  height: 1.1rem;
  margin: 0;
}

.filter-search input {
  width: 100%;
}

.filter-quick-btn {
  font-size: 0.85rem;
  padding: 0.45rem 1rem;
}

.calendar-selection {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  margin: 0;
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  background: var(--calendar-selection-bg);
}

.calendar-selection::before {
  content: "📅";
  font-size: 1rem;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0.35rem;
  padding: 1rem;
  border-radius: 1rem;
  background: var(--calendar-grid-bg);
  border: 1px solid var(--calendar-grid-border);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.calendar-weekday {
  text-align: center;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.calendar-day {
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  border-radius: 0.75rem;
  padding: 0.55rem 0.35rem 0.4rem;
  min-height: 3.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  font-size: 0.95rem;
  cursor: pointer;
  color: var(--text-primary);
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.12s ease, box-shadow 0.2s ease;
  position: relative;
  overflow: hidden;
}

.calendar-day.placeholder {
  visibility: hidden;
  pointer-events: none;
  border: none;
  background: transparent;
  padding: 0;
}

.calendar-day:disabled {
  cursor: default;
  opacity: 0.45;
}

.calendar-day:hover:not(:disabled),
.calendar-day:focus-visible:not(:disabled) {
  border-color: var(--accent);
  background: var(--calendar-day-hover);
  transform: translateY(-1px);
}

.calendar-day.today:not([data-selected="true"]) {
  box-shadow: inset 0 0 0 2px rgba(245, 158, 11, 0.35);
  border-color: rgba(245, 158, 11, 0.45);
}

.calendar-day.today:not([data-selected="true"]) .calendar-day-number {
  color: var(--calendar-today-ring);
}

.calendar-day[data-selected="true"] {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--calendar-day-selected);
  box-shadow: 0 10px 22px var(--calendar-day-shadow);
}

.calendar-day.selection-single {
  background: var(--calendar-day-selected);
}

.calendar-day[data-range-state="middle"] {
  background: var(--calendar-day-range);
  border-color: rgba(37, 99, 235, 0.35);
}

.calendar-day.selection-start[data-range-state="start"] {
  background: linear-gradient(90deg, var(--calendar-day-selected) 0%, var(--calendar-day-range) 95%);
}

.calendar-day.selection-end[data-range-state="end"] {
  background: linear-gradient(90deg, var(--calendar-day-range) 5%, var(--calendar-day-selected) 100%);
}

.calendar-day.selection-start[data-range-state="both"],
.calendar-day.selection-end[data-range-state="both"] {
  background: var(--calendar-day-selected);
}

.calendar-day[data-range-state="middle"] .calendar-day-number,
.calendar-day.selection-start .calendar-day-number,
.calendar-day.selection-end .calendar-day-number,
.calendar-day.selection-single .calendar-day-number {
  color: var(--accent);
}

.calendar-day-number {
  font-weight: 600;
  transition: color 0.2s ease;
}

.calendar-marker-wrap {
  display: flex;
  gap: 0.2rem;
  margin-top: 0.3rem;
}

.calendar-marker {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
}

.calendar-marker--holiday {
  background: #f97316;
}

.calendar-marker--vacation {
  background: #3b82f6;
}

.calendar-marker--status_green {
  background: #16a34a;
}

.calendar-marker--status_red {
  background: #ef4444;
}

.calendar-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  list-style: none;
  margin: 0;
  padding: 0;
}

.calendar-legend li {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.legend-dot {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
}

.legend-holiday {
  background: #f97316;
}

.legend-vacation {
  background: #3b82f6;
}

.legend-green {
  background: #16a34a;
}

.legend-red {
  background: #ef4444;
}

.table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

th,
td {
  padding: 0.85rem 0.9rem;
  text-align: left;
  font-size: 0.95rem;
}

th {
  font-weight: 700;
  background: var(--table-header);
}

tbody tr:nth-child(odd) {
  background: rgba(15, 23, 42, 0.02);
}

.empty {
  text-align: center;
  color: var(--text-secondary);
  font-style: italic;
}

/* Status Pills */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.status-pill.ok {
  background: rgba(22, 163, 74, 0.15);
  color: #16a34a;
}

.status-pill.warn {
  background: rgba(234, 179, 8, 0.18);
  color: #eab308;
}

.status-pill.fail {
  background: rgba(239, 68, 68, 0.18);
  color: #ef4444;
}

.status-pill.info {
  background: rgba(59, 130, 246, 0.18);
  color: #3b82f6;
}

.status-cell {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.status-details {
  margin: 0.4rem 0 0;
  padding-left: 1.2rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.status-details li {
  list-style: disc;
}

.status-details.inline {
  margin: 0.35rem 0 0;
  padding-left: 1.2rem;
}

/* Mobile */
@media (max-width: 780px) {
  .sidebar {
    left: -240px;
    transition: left 0.3s ease;
  }

  .sidebar.open {
    left: 0;
  }

  .main-content {
    margin-left: 0;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
  }

  #menu-toggle {
    position: fixed;
    top: 1rem;
    left: 1rem;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    font-size: 1.3rem;
    z-index: 200;
    cursor: pointer;
  }
}